I love the WordPress software and I have a free wordpress hosted blog. The only problem with it is that I am not able to customize it. I have MSN spaces which looks cool and you have some say in how the site looks, however, I run an adultish blog and MSN TOS is very family oriented. I'm afraid I'm going to get banned or something so I haven't used it much.

I just set up a Blogger Blog to mirror my WordPress blog. I like being able to customize it. We'll see how it goes as far as the community and traffic generation etc.

I also have Livejournal blog. It's okay.

(FYI Wordpress and typepad are blogging software. However every so often Wordpress will invite someone to have a blog hosted on their servers.)